For Sale: P3 ORION A-NEW MOD 3, Univac 1830 / CP-823/U Serial A1 Computer. The Univac 1830 is the only one of it's kind. It will be sold as it is in the picture section of this website: Control Panel, Central Processor, 32,000 bit Memory, Power Supply, 4 Airborne I/O units, Ground I/O unit. All drawings, blue prints, manuals, engineering testing data,...will be included, along with the 90-pin cables...

I am not interested in donating the Univac 1830, since I have invested too much time and money into the research and acquisition of it. I will entertain serious offers.Transportation would be the burden of the new owner; the Univac 1830 is located in Ohio, USA.The Univac 1830 / CP-823/U is one of the most historically important, complete and earliest Digital Monolithic Silicon Computing Systems left intact.Use contact form.

I have had many requests for technical information on the CP-823/U. I have added a new tab at the top of the page for technical documents. Choose from the drop-down list. They are in PDF format. These are most likely the only copies in existence; some are hand written by the Univac Engineers and Naval Engineers at NADC. If any of the information contained within these documents is used in a report, article, book...please have the courtesy and journalistic professionalism to credit the source.

The Univac 1830, DOD designated CP-823/U Digital Avionics Engineering Prototype computer is a direct descendant of several discrete 30-bit Univac / Military shipboard computers. The AN/USQ-17 (NTDS) 6-built, the CP-642A (Univac 1206) 142 built and the CP-642B (Univac 1212) 241 built. Although the CP-823/U was the first digital computing system and was designed and built from the ground up, the 30-bit Instruction Set Architecture (ISA) it used was tried and true.

The CP-823/U was extensively tested in and out of the aircraft from 1965-1968. After the U.S. Navy was finished with the CP-823/U (Univac 1830) and Project A-NEW MOD III, the computing system was donated to the Drexel Institute of Technology, name changed to Drexel University in 1970. I have a few documents from Drexel in 1970-1973: The work order to rewire the room used to house the Univac 1830, the generator manual, daily logs of operation of the 1830, an Operator's Manual written by Drexel students and a list of students operating the CP-823/U. The fact that the Univac 1830 was in operation at one of the country's premier research technical schools explains the high hours of usage shown on the control panel, (assuming the hours clock was operational). This could have been the beginning of Drexel's Electrical Engineering lab expanding into a Computer Science lab. These days, it's easy to forget that these early computers were based on electrical currents and magnetic fields.